TunerPro User Forum

Robert,
I emailed a new log to you based on your Bin

Thanks

I'd like to add the ESC to it, but the way the kit comes is just Fuel Control.

Once I get this working, then I'll try some more tricks!




http://howellefi.com/customer/product.p ... 272&page=1

Six Shooter,
Its a holley 502-6 670CFM TBI with 80# injectors I believe.

So you are saying the the VE tables are about 130% higher than they should be?

I was comparing the Original to the AZFT9503 table which is as close as I could find and I didn't think it was wildly different. But hey I see that in some cells now

Robert, Files are now zipped

thanks

There is no Vehicle speed sensor, but there is TPS (set for .57V at idle) and engine temp sensor. Ahh I maybe thinking at it the wrong way... >128 engine was running lean and ECM is adding fuel. Below 128 engine was running RICH so is sutracting fuel. I was thinking >128 it is leaning the mixture an...

Shoot me an email to bruce a t perthcomm dot com and I'll email you my last couple bins and logs.

PWM = Pulse Width Ratio for the injectors. I'm in electronics so since PWM is how the ECM controls the fuel, I was using my electronic's jargon.

It can last for a couple of minutes before the O2 starts swinging again and the lean/rich counts start cycling.

The Howell system in this application does not control the spark, its just a stock HEI ignition, so it doesn't have a knock sensor. They have a circuit in the wiring harness to fake some knock, I am not sure why. When its doing this there maybe some light rattle knock, but certainly not the knock I ...

It does feel like it is leaned out, engine bogs badly when trying to accelerate. If I'm just not getting data fast enough, wouldn't the rich/lean counter still be counting? It doesn't, it stops counting or counts change slowly. I should mention this is a newly rebuilt engine, but it was doing the sa...

Sorry about that, Its a GM 747 ECM, with a 42 XDF. I'd blame it on the O2 sensor as well but some others who have the same kit on the same Motorhome/engine combo have the same issue. They have changed O2 sensors and gone from single wire to heated and it doesn't fix it. I would think with the O2 rea...

I have a Howell system on my GMC Motorhome, 455 olds FWD. I am trying to understand how all the tables and parameters interact. I have been googling around and I have not found a good writeup that explains it all, just bits and pieces. My main issue is my O2 will drop to near zero when I go off idle...